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Dispersal in Plants: A Population Perspective (Oxford Biology)
This advanced textbook is the first to explore the consequences of plant dispersal for population and community dynamics, spatial patterns, and evolution. It successfully integrates a rapidly expanding body of theoretical and empirical research. DT The first comprehensive treatment of plant dispersal set within a population framework DT Examines both the processes and consequence of dispersal DT Spans the entire range of research, from natural history and collection of empirical data to modeling and evolutionary theory DT Provides a clear and simple explanation of mathematical concepts Dispersal in Plants is aimed principally at graduates interested in plant ecology, although given the strong current interests in invasive species and global change it will also be of interest and use to a broad audience of plant scientists and ecologists seeking an authoritative overview of this rapidly expanding field..
Price: $50.30
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All about Tennessee Wildflowers
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Flip, Float, Fly!: Seeds on the Move
Fans of From Seed to Plant, a perennial seller by Gail Gibbons, will want this lushly illustrated picture book. A gust of wind lifes a maple seed, sending it spinning like a shiny green helicopter throught the sky. Where wil it land? From splashing away in a raindrop to scurrying with scampering squirrels to hitching rides on your sleeves and socks, seeds have many ingenious ways to traveling to new laces, growing roots, and beginning the cycle again..
Price: $3.00
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The Polish Deportees of World War II: Recollections of Removal to the Soviet Union and Dispersal Throughout the World
Among the great tragedies that befell Poland during World War II was the forced deportation of its citizens by the Soviet Union during the first Soviet occupation of that country between 1939 and 1941. This is the story of that brutal Soviet ethnic cleansing campaign told in the words of some of the survivors. It is an unforgettable human drama of excruciating martyrdom in the Gulag. For example, one witness reports: "A young woman who had given birth on the train threw herself and her newborn under the wheels of an approaching train." Survivors also tell the story of events after the "amnesty." "Our suffering is simply indescribable. We have spent weeks now sleeping in lice-infested dirty rags in train stations," wrote the Milewski family. Details are also given on the non-European countries that extended a helping hand to the exiles in their hour of need..
Price: $35.95
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Sea-Beans from the Tropics: A Collector's Guide to Sea-Beans and Other Tropical Drift on Atlantic Shores
Atlantic Coast beaches offer a variety of souvenirs and curiosities to those beachgoers that care to look. Shells have long been treasured finds, and their descriptions are well documented in a variety of books and guides. But what about the other things found on the beach? These are the things that drift in the ocean and are carried in with the winds: sea-beans, spirula, mermaid's purses, and other tropical treasures. This book references them in a convenient form for the beachcomber, while keeping the oceanographer and botanist in mind. Interesting descriptions of each sea-bean species, or other drift treasure, and 175 color photographs make this book a valuable collector's guide. Perry and Dennis provide the results of a 30-year study on sea-bean flotation tests. No other book combines personal experience, use of color photography identifications, and the scientific field of botany into a complete, friendly user's guide for identifying sea-beans and other drift from the sea..
Price: $29.50
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The Tiny Seed
Dazzlingly colorful collage illustrations and a simple but dramatic text tell the fascinating story of the life cycle of a flower in terms of the adventures of a tiny seed. Carried aloft by the autumn wind, the tiny seed, along with other bigger seeds, travels far over the world. the journey is perilous: one of the bigger seeds is burned by the sun; another falls into the ocean; still another is eaten by a bird. Even after those that are left have landed on fertile ground and begun to grow, danger is near: one small plant is stepped on; one little flower is picked; but the tiny seed keeps growing almost unnoticed. Young readers will cheer at the happy outcome of this exciting tale. And they will long remember the heartening message of the tiny seed's steadfast perserverance in the face of many hazards and obstacles until its final joyful success..
Price: $3.95
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Mammalian Dispersal Patterns: The Effects of Social Structure on Population Genetics
Mammalian Dispersal Patterns examines the ways that social structure affects population genetics and, in turn, rates of evolution, in mammalian groups. It brings together fieldwork in animal behavior and wildlife biology with theoretical work in demography and population genetics. The focus here is dispersal—whether, how, and when individuals leave the areas where they are born. Theoretical work in population genetics indicates that such social factors as skewed sex ratios, restrictive mating patterns, and delayed age of first reproduction will lower the reproductive variability of a population by reducing the number of genotypes passed from one generation to the next. Field studies have shown that many mammalian species do exhibit many such social characteristics. Among horses, elephant seals, and a number of primates, the majority of females are inseminated by only a fraction of the males. In pacts of wolves and mongooses, usually only the highest-ranking male and female breed in a given season. Although socially restricted mating tends to lower genetic variability in isolated populations, it actually tends to increase genetic variability in subdivided populations with low rates of migration between subunits. Among some species there is little dispersal and thus little gene flow between subpopulations; other species travel far afield before mating. The contributors to this volume examine actual data from populations of mammals, the way patterns of dispersal correlate with the genetic structure of individuals and populations, and mathematical models of population structure. This interdisciplinary approach has an important bearing on work in conservation of both wildlife and zoo populations, for it shows that the home range and the population size needed to maintain genetic variability can differ greatly from one species to the next. The volume also offers a fruitful model for future research. .
Price: $18.00
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